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global map of August 2021 temperature anomalies and a graph of annual AUgust anomalies since 1880
September 15, 2021
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It was the sixth-warmest August on record for the globe. It's very likely that the year will wind up among the 10 warmest years on record.

side by side maps of US precipitation and percent of average precipitation for August 2021
September 10, 2021
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August was warmer than average, capping off a summer that tied for warmest on record.

September 9, 2021

La Niña conditions are likely to develop soon. Our blogger gives you the low-down on all things tropical Pacific.

Two small maps of US showing drought conditions and the drought forecast for September 2021
September 1, 2021
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Large parts of the country show no tip in the odds toward either a cold or warm September temperature outcome. The rainfall associated with Hurricane Ida's remnants is likely to be enough on its own to lead to a wetter-than-average September for areas in its path.

August 26, 2021

Let's take a tour through North America's summer monsoon, a critical source of rainfall for the U.S. Southwest and Mexico.